3. The entropy change, ΔS, associated with the isothermal (i.e.constant temperature) change in volume of n moles of an idealgas from volume V1 to volume V2 is given by the equationΔS = nR ln(V2/V1)where R is the gas constant.(a) If a compression occurs (V2 < V1) use Equation 1 to deducewhether there will there be an increase ( ΔS is positive) ordecrease ( ΔS is negative) in the entropy of the gas.Section 2: Coursework 12(b) If an expansion occurs (V2 > V1) use Equation 1 to deducewhether there will there be an increase or decrease in theentropy of the gas.(c) The ideal gas law states that pV = nRT, where p is thepressure of the gas. Use this expression and Equation 1 toobtain an equation relating the entropy change to the initialand final pressures (p1 and p2). (Note that n,R and T willbe constant at the two different pressures).

[FONT=Times New Roman ][COLOR=black ][FONT=CMR10 ]Why declare a font if you're going to change it before you use it?

3. The entropy change, [/FONT ] [/COLOR ][COLOR=black ]Δ[/COLOR ][COLOR=black ][FONT=CMMI10 ]S[/FONT ][/COLOR ] Once you declare "[COLOR=black ]" it stays in black until you change it.
You don't have to do black-ON, black-OFF for every font-change.